Here’s the clean Markdown version: Scrapy is a powerful web scraping library that supports proxy integration through meta parameters or custom middleware.

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Method 1: Using Meta Parameters

import scrapy

class ScraperSpider(scrapy.Spider):
    name = "scraper"
    start_urls = ["https://httpbin.org/ip"]

    def start_requests(self):
        for url in self.start_urls:
            yield scrapy.Request(
                url=url,
                callback=self.parse,
                meta={
                    "proxy": "http://<YOUR_USERNAME>:<YOUR_PASSWORD>@network.joinmassive.com:65534"
                },
            )

    def parse(self, response):
        self.logger.info(f"Response: {response.text}")

​
Method 2: Custom Middleware

Update the middlewares.py with: 
class CustomProxyMiddleware:
    def __init__(self):
        self.proxy = 'http://<YOUR_USERNAME>:<YOUR_PASSWORD>@network.joinmassive.com:65534'

    def process_request(self, request, spider):
        if 'proxy' not in request.meta:
            request.meta['proxy'] = self.proxy
Add the middleware to DOWNLOADER_MIDDLEWARES in settings.py: 
DOWNLOADER_MIDDLEWARES = {
    'myproject.middlewares.CustomProxyMiddleware': 350,
}
Note that, when using proxies with the Scrapy, always use host http and port 65534, which will work perfectly.